Yunus Balcioglu

I wanted to share a quick visual comparison between the SideFX recording of my Houdini HIVE Tokyo 2025 session “Adaptive Fracture Synthesis and Propagation in VEX using OpenSubdiv Limit Surface Derivatives” and my own local QHD capture.

The SideFX version is completely fine for watching the presentation, but my recording was captured directly from my display source with no compression loss, so it preserves a lot more clarity across the entire presentation. This includes all geometry details, colors, UI elements, and text. This is one of the main reasons I am preparing my own edited cuts.

The attached images show the difference between the two versions.

The full END-JPN cut will be posted next, followed later by the English-only version. These edited cuts will be available exclusively to paid members on Patreon [www.patreon.com].

Hi,

You have to make sure your vertex ordering is sequential after you break it up into segments:

Hi,

It should work. Most likely the noise values are very small compared to your existing normals, so the change is barely visible. Try temporarily cranking the noise amplitude way up to see if it's actually affecting the data.

Also, simply adding normals isn't a very meaningful operation, since you're no longer working with unit-length vectors. If you want a more visible overlay effect, you’ll usually get better results by either:

1. Blending the underlying height/displacement and then recomputing normals, or

2. Using a normalized / slerp-style blend between the two normal fields.